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Diff: rtos/Mutex.h
- Revision:
- 8:88a1a9c26ae3
- Parent:
- 6:350b53afb889
- Child:
- 31:015df9e602b6
--- a/rtos/Mutex.h Fri Nov 23 10:16:38 2012 +0000 +++ b/rtos/Mutex.h Tue Nov 27 16:55:38 2012 +0000 @@ -1,45 +1,65 @@ -/* Copyright (c) 2012 mbed.org */ -#ifndef MUTEX_H -#define MUTEX_H - -#include <stdint.h> -#include "cmsis_os.h" - -namespace rtos { - -/*! The Mutex class is used to synchronise the execution of threads. - This is for example used to protect access to a shared resource. -*/ -class Mutex { -public: - /*! Create and Initialize a Mutex object */ - Mutex(); - - /*! Wait until a Mutex becomes available. - \param millisec timeout value or 0 in case of no time-out. (default: osWaitForever) - \return status code that indicates the execution status of the function. - */ - osStatus lock(uint32_t millisec=osWaitForever); - - /*! Try to lock the mutex, and return immediately - \return true if the mutex was acquired, false otherwise. - */ - bool trylock(); - - /*! Unlock the mutex that has previously been locked by the same thread - \return status code that indicates the execution status of the function. - */ - osStatus unlock(); - - ~Mutex(); - -private: - osMutexId _osMutexId; - osMutexDef_t _osMutexDef; -#ifdef CMSIS_OS_RTX - int32_t _mutex_data[3]; -#endif -}; - -} -#endif +/* mbed Microcontroller Library + * Copyright (c) 2006-2012 ARM Limited + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + */ +#ifndef MUTEX_H +#define MUTEX_H + +#include <stdint.h> +#include "cmsis_os.h" + +namespace rtos { + +/** The Mutex class is used to synchronise the execution of threads. + This is for example used to protect access to a shared resource. +*/ +class Mutex { +public: + /** Create and Initialize a Mutex object */ + Mutex(); + + /** Wait until a Mutex becomes available. + @param millisec timeout value or 0 in case of no time-out. (default: osWaitForever) + @return status code that indicates the execution status of the function. + */ + osStatus lock(uint32_t millisec=osWaitForever); + + /** Try to lock the mutex, and return immediately + @return true if the mutex was acquired, false otherwise. + */ + bool trylock(); + + /** Unlock the mutex that has previously been locked by the same thread + @return status code that indicates the execution status of the function. + */ + osStatus unlock(); + + ~Mutex(); + +private: + osMutexId _osMutexId; + osMutexDef_t _osMutexDef; +#ifdef CMSIS_OS_RTX + int32_t _mutex_data[3]; +#endif +}; + +} +#endif